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annotate nuc-fw/cfgmagic/processconf.sh @ 88:ccde45a06737

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nuc-fw: beginning of the configuration mechanism
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Fri, 23 Aug 2013 02:02:59 +0000
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children 28f967578233
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ccde45a06737 nuc-fw: beginning of the configuration mechanism
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1 #!/bin/sh
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2 # The top level Makefile invokes this Bourne shell script after ensuring
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3 # that the build.conf file is present. The job of this script is to grok
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4 # that configuration file and to produce include/config.{h,mk,m4} files
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5 # corresponding to the selected configuration.
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6 #
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7 # The current directory is expected to be the top level of nuc-fw, i.e.,
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8 # all fragments are sourced as cfgmagic/blah.
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9 # Don't run this script directly - let the Makefile do it for you.
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10
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11 set -e
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12 . cfgmagic/functions
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13 TARGET=
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14 c_export_list=
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15 mk_export_list=
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16 m4_export_list=
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17
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18 . ./build.conf
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19
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20 if [ -z "$TARGET" ]
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21 then
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22 echo "Error: target not set in build.conf" 1>&2
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23 exit 1
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24 fi
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25
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26 # Once we get some actual functionality, the following definitions
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27 # will likely depend on the target and feature configuration,
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28 # but for now all we have is a FreeNucleus RTOS demo.
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29
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30 BUILD_COMPONENTS="nucdemo nucleus sprintf sysglue"
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31 export_to_mk BUILD_COMPONENTS
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32
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33 BUILD_DEFAULT_IMAGE=ramImage
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34 export_to_mk BUILD_DEFAULT_IMAGE
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35
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36 # Now generate the output files!
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37
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38 parse_export_list() {
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39 for var in $1
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40 do
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41 eval "value=\"\$$var\""
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42 emit_def "$var" "$value"
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43 done
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44 }
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45
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46 # make config.h
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47 emit_def() {
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48 echo "#define $1 $2" >> include/config.h
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49 }
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50 : > include/config.h
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51 parse_export_list "$c_export_list"
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52
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53 # make config.mk
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54 emit_def() {
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55 echo "$1= $2" >> include/config.mk
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56 }
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57 : > include/config.mk
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58 parse_export_list "$mk_export_list"
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59
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60 # make config.m4
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61 emit_def() {
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62 echo 'define(`'"$1'"',`'"$2')dnl" >> include/config.m4
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63 }
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64 : > include/config.m4
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65 parse_export_list "$m4_export_list"